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205 lines
5.6 KiB
LLVM
205 lines
5.6 KiB
LLVM
; Test f64 conditional stores that are presented as selects.
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;
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; RUN: llc < %s -mtriple=s390x-linux-gnu | FileCheck %s
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declare void @foo(double *)
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; Test with the loaded value first.
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define void @f1(double *%ptr, double %alt, i32 %limit) {
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; CHECK-LABEL: f1:
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; CHECK-NOT: %r2
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; CHECK: blr %r14
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; CHECK-NOT: %r2
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; CHECK: std %f0, 0(%r2)
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; CHECK: br %r14
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%cond = icmp ult i32 %limit, 420
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%orig = load double, double *%ptr
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%res = select i1 %cond, double %orig, double %alt
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store double %res, double *%ptr
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ret void
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}
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; ...and with the loaded value second
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define void @f2(double *%ptr, double %alt, i32 %limit) {
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; CHECK-LABEL: f2:
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; CHECK-NOT: %r2
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; CHECK: bher %r14
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; CHECK-NOT: %r2
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; CHECK: std %f0, 0(%r2)
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; CHECK: br %r14
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%cond = icmp ult i32 %limit, 420
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%orig = load double, double *%ptr
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%res = select i1 %cond, double %alt, double %orig
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store double %res, double *%ptr
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ret void
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}
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; Check the high end of the aligned STD range.
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define void @f3(double *%base, double %alt, i32 %limit) {
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; CHECK-LABEL: f3:
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; CHECK-NOT: %r2
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; CHECK: blr %r14
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; CHECK-NOT: %r2
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; CHECK: std %f0, 4088(%r2)
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; CHECK: br %r14
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%ptr = getelementptr double, double *%base, i64 511
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%cond = icmp ult i32 %limit, 420
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%orig = load double, double *%ptr
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%res = select i1 %cond, double %orig, double %alt
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store double %res, double *%ptr
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ret void
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}
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; Check the next doubleword up, which should use STDY instead of STD.
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define void @f4(double *%base, double %alt, i32 %limit) {
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; CHECK-LABEL: f4:
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; CHECK-NOT: %r2
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; CHECK: blr %r14
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; CHECK-NOT: %r2
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; CHECK: stdy %f0, 4096(%r2)
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; CHECK: br %r14
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%ptr = getelementptr double, double *%base, i64 512
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%cond = icmp ult i32 %limit, 420
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%orig = load double, double *%ptr
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%res = select i1 %cond, double %orig, double %alt
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store double %res, double *%ptr
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ret void
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}
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; Check the high end of the aligned STDY range.
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define void @f5(double *%base, double %alt, i32 %limit) {
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; CHECK-LABEL: f5:
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; CHECK-NOT: %r2
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; CHECK: blr %r14
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; CHECK-NOT: %r2
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; CHECK: stdy %f0, 524280(%r2)
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; CHECK: br %r14
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%ptr = getelementptr double, double *%base, i64 65535
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%cond = icmp ult i32 %limit, 420
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%orig = load double, double *%ptr
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%res = select i1 %cond, double %orig, double %alt
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store double %res, double *%ptr
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ret void
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}
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; Check the next doubleword up, which needs separate address logic.
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; Other sequences besides this one would be OK.
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define void @f6(double *%base, double %alt, i32 %limit) {
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; CHECK-LABEL: f6:
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; CHECK-NOT: %r2
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; CHECK: blr %r14
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; CHECK-NOT: %r2
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; CHECK: agfi %r2, 524288
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; CHECK: std %f0, 0(%r2)
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; CHECK: br %r14
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%ptr = getelementptr double, double *%base, i64 65536
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%cond = icmp ult i32 %limit, 420
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%orig = load double, double *%ptr
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%res = select i1 %cond, double %orig, double %alt
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store double %res, double *%ptr
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ret void
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}
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; Check the low end of the STDY range.
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define void @f7(double *%base, double %alt, i32 %limit) {
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; CHECK-LABEL: f7:
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; CHECK-NOT: %r2
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; CHECK: blr %r14
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; CHECK-NOT: %r2
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; CHECK: stdy %f0, -524288(%r2)
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; CHECK: br %r14
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%ptr = getelementptr double, double *%base, i64 -65536
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%cond = icmp ult i32 %limit, 420
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%orig = load double, double *%ptr
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%res = select i1 %cond, double %orig, double %alt
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store double %res, double *%ptr
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ret void
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}
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; Check the next doubleword down, which needs separate address logic.
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; Other sequences besides this one would be OK.
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define void @f8(double *%base, double %alt, i32 %limit) {
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; CHECK-LABEL: f8:
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; CHECK-NOT: %r2
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; CHECK: blr %r14
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; CHECK-NOT: %r2
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; CHECK: agfi %r2, -524296
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; CHECK: std %f0, 0(%r2)
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; CHECK: br %r14
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%ptr = getelementptr double, double *%base, i64 -65537
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%cond = icmp ult i32 %limit, 420
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%orig = load double, double *%ptr
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%res = select i1 %cond, double %orig, double %alt
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store double %res, double *%ptr
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ret void
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}
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; Check that STDY allows an index.
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define void @f9(i64 %base, i64 %index, double %alt, i32 %limit) {
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; CHECK-LABEL: f9:
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; CHECK-NOT: %r2
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; CHECK: blr %r14
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; CHECK-NOT: %r2
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; CHECK: stdy %f0, 524287(%r3,%r2)
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; CHECK: br %r14
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%add1 = add i64 %base, %index
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%add2 = add i64 %add1, 524287
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%ptr = inttoptr i64 %add2 to double *
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%cond = icmp ult i32 %limit, 420
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%orig = load double, double *%ptr
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%res = select i1 %cond, double %orig, double %alt
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store double %res, double *%ptr
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ret void
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}
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; Check that volatile loads are not matched.
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define void @f10(double *%ptr, double %alt, i32 %limit) {
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; CHECK-LABEL: f10:
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; CHECK: ld {{%f[0-5]}}, 0(%r2)
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; CHECK: {{jl|jnl}} [[LABEL:[^ ]*]]
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; CHECK: [[LABEL]]:
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; CHECK: std {{%f[0-5]}}, 0(%r2)
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; CHECK: br %r14
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%cond = icmp ult i32 %limit, 420
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%orig = load volatile double, double *%ptr
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%res = select i1 %cond, double %orig, double %alt
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store double %res, double *%ptr
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ret void
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}
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; ...likewise stores. In this case we should have a conditional load into %f0.
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define void @f11(double *%ptr, double %alt, i32 %limit) {
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; CHECK-LABEL: f11:
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; CHECK: jhe [[LABEL:[^ ]*]]
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; CHECK: ld %f0, 0(%r2)
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; CHECK: [[LABEL]]:
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; CHECK: std %f0, 0(%r2)
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; CHECK: br %r14
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%cond = icmp ult i32 %limit, 420
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%orig = load double, double *%ptr
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%res = select i1 %cond, double %orig, double %alt
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store volatile double %res, double *%ptr
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ret void
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}
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; Try a frame index base.
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define void @f12(double %alt, i32 %limit) {
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; CHECK-LABEL: f12:
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; CHECK: brasl %r14, foo@PLT
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; CHECK-NOT: %r15
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; CHECK: jl [[LABEL:[^ ]*]]
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; CHECK-NOT: %r15
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; CHECK: std {{%f[0-9]+}}, {{[0-9]+}}(%r15)
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; CHECK: [[LABEL]]:
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; CHECK: brasl %r14, foo@PLT
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; CHECK: br %r14
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%ptr = alloca double
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call void @foo(double *%ptr)
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%cond = icmp ult i32 %limit, 420
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%orig = load double, double *%ptr
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%res = select i1 %cond, double %orig, double %alt
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store double %res, double *%ptr
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call void @foo(double *%ptr)
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ret void
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}
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